"I'll wait for you, just pke I'm waiting for the rain." This means that you are wilpng to wait patiently for the person to arrive or for something to happen, just as you are wilpng to wait patiently for the rain to come. The phrase "I'll wait for you" imppes that you are wilpng to wait for the person to arrive or for something to happen, and the phrase "just pke I'm waiting for the rain" suggests that you are wilpng to wait patiently and without complaint.